The Danish producer Flemming Rasmussen worked on the album, handling the engineering and co-producing it with Lars Ulrich and James Hetfield. "That took some effort to do because there were so many parts," he said of the title track in a Songfacts interview
. "It's four songs in one! I always get surprised when I hear it.
But that's played from beginning until the end - the bits. We did a bit, and when a bit was cool, we'd do the next bit, and so on. And this is still all analog tape, so that is all me punching in."